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Reuse is the action or practice of using an item, whether for its original purpose (conventional reuse) or to fulfill a different function (creative reuse or repurposing). It should be distinguished from recycling , which is the breaking down of used items to make raw materials for the manufacture of new products.
In the 2010s, several models of a circular economy were developed that employed a set of steps, or levels of circularity, typically using English verbs or nouns starting with the letter "r". [71] The first such model, known as the "Three R principle", was "Reduce, Reuse, Recycle", [71] which can be traced back as early as the 1970s. [72]
This is an accepted version of this page This is the latest accepted revision, reviewed on 6 February 2025. Converting waste materials into new products This article is about recycling of waste materials. For recycling of waste energy, see Energy recycling. "Recycled" redirects here. For the album, see Recycled (Nektar album). The three chasing arrows of the universal recycling symbol ...
Carbon Dioxide Equivalent (CO 2 e ) – the unit used to measure the impacts of releasing (or avoiding the release of) the seven different greenhouse gases; it is obtained by multiplying the mass of the greenhouse gas by its global warming potential. For example, this would be 21 for methane and 310 for nitrous oxide.
Composition over inheritance (or composite reuse principle) in object-oriented programming (OOP) is the principle that classes should favor polymorphic behavior and code reuse by their composition (by containing instances of other classes that implement the desired functionality) over inheritance from a base or parent class. [2]
Code reuse is the practice of using existing source code to develop software instead of writing new code. Software reuse is a broader term that implies using any existing software asset to develop software instead of developing it again. [1] [2]: 7 An asset that is relatively easy to reuse and offers significant value is considered highly ...
A common concept in Recycling is the 3Rs, which represent Reduce, Reuse, and Recycle. According to The Upcycle Artist's Handbook: A Comprehensive Guide to Creating Art from Waste published by Upcycle Art And Craft Society (UAACS). [8] They coined a 3Rs principle for upcycling: Rethink, Reform, and Reborn.
All products and services have environmental impacts, from the extraction of raw materials for production to manufacture, distribution, use and disposal. Following the waste hierarchy will generally lead to the most resource-efficient and environmentally sound choice but in some cases refining decisions within the hierarchy or departing from it can lead to better environmental outcomes.